Move guest lifetime management to chrome

chrome/browser/guest_view/web_view/web_view_guest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/guest_view/web_view/web_view_guest.h"
 
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 159 matching lines @@
 }
 
 }  // namespace
 
 WebViewGuest::WebViewGuest(int guest_instance_id,
                            WebContents* guest_web_contents,
                            const std::string& embedder_extension_id)
    :  GuestView<WebViewGuest>(guest_instance_id,
                               guest_web_contents,
                               embedder_extension_id),
-      WebContentsObserver(guest_web_contents),
       script_executor_(new extensions::ScriptExecutor(guest_web_contents,
                                                       &script_observers_)),
       pending_context_menu_request_id_(0),
       next_permission_request_id_(0),
       is_overriding_user_agent_(false),
       pending_reload_on_attachment_(false),
       main_frame_id_(0),
       chromevox_injected_(false),
       find_helper_(this),
       javascript_dialog_helper_(this) {
@@ skipping 685 matching lines @@
 }
 
 void WebViewGuest::WebContentsDestroyed() {
   // Clean up custom context menu items for this guest.
   extensions::MenuManager* menu_manager = extensions::MenuManager::Get(
       Profile::FromBrowserContext(browser_context()));
   menu_manager->RemoveAllContextItems(extensions::MenuItem::ExtensionKey(
       embedder_extension_id(), view_instance_id()));
 
   RemoveWebViewFromExtensionRendererState(web_contents());
+  GuestViewBase::WebContentsDestroyed();
 }
 
 void WebViewGuest::UserAgentOverrideSet(const std::string& user_agent) {
   content::NavigationController& controller =
       guest_web_contents()->GetController();
   content::NavigationEntry* entry = controller.GetVisibleEntry();
   if (!entry)
     return;
   entry->SetIsOverridingUserAgent(!user_agent.empty());
   if (!attached()) {
@@ skipping 513 matching lines @@
     bool allow,
     const std::string& user_input) {
   WebViewGuest* guest =
       WebViewGuest::From(embedder_render_process_id(), new_window_instance_id);
   if (!guest)
     return;
 
   if (!allow)
     guest->Destroy();
 }